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Finding the Fourth Proportional to 4,086.90, 6,130.41 and 1,008.90

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Solution

The fourth proportional to 4,086.90, 6,130.41 and 1,008.90 is: 1,513.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,086.90 : 6,130.41 = 1,008.90 : x
  2. Step 2: Convert to fraction form
    4,086.90/6,130.41 = 1,008.90/x
  3. Step 3: Cross multiply
    4,086.90x = 6,130.41 × 1,008.90
  4. Step 4: Simplify right side
    4,086.90x = 6,184,970.65
  5. Step 5: Solve for x
    x = 6,184,970.65/4,086.90
  6. Step 6: Final answer
    x = 1,513.36

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.